

Kristin Tessmar-Raible
University of Vienna researcher studying lunar timing in biology, known for work on marine bristle worms and mechanisms by which the moon influences physiology, sleep, and reproduction.
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Nov 24, 2025 • 48min
How does the moon shape biology?
Kristin Tessmar-Raible, a University of Vienna researcher who studies how the moon times biology, talks about discovering brain light receptors in marine bristle worms. She explores lunar-timed swarming, mechanisms that distinguish moonlight from sunlight, parallels with human menstrual rhythms, sleep and mental health, and how light pollution and skepticism have shaped this field.


